Theme Default Values?

Question

The component guide lists example values for all the theme methods.
Is there a list anywhere that tells you what the default values are, or are you able to query what a value is?
SimpleGrid.brs example says --
'** @return The default application theme.
'** Screens can make slight adjustments to the default
'** theme by getting it from here and then overriding
'** individual theme attributes.
Function CreateDefaultTheme() as Object

I don't see where it actually grabs any values for the rest of the unlisted properties of the theme object? ie they appear to be all write only commands.

RokuKevin · Answer

It inherits the default theme for any values that aren't overridden.--Kevin

destruk · Answer

But what are the default values, or how do I get it to reload default values?
Are you saying that simply a call to function CreateDefaultTheme() as Object will load values for defaults every time it is called, and then act on the lines below that one if they exist?

More specifically - say I have my app. The app is selected from the main menu and begins to execute. I show three choices on the springboard and I want them to have the defaults for everything.
So I call function CreateDefaultTheme at the beginning of this to ensure whenever a user goes 'back' or it needs to be redrawn, all options are reset to the standard defaults.
When a user selects one of the options I want the dialog boxes and everything else to be different.
And just to be overly complex, I want a gridscreen below that level where everything is defaulted again.

What is the easiest way to make this happen if I have no access to know what any of the actual default settings are? Or don't I need to know those values for some reason?

evilmax17 · Answer

If you want to reset back to the default value, you can use the "ClearThemeAttribute" function on roAppManager.

destruk · Answer

What I want it to do is to load a different description background image whenever the selected grid item changes. This way the color matches the selected image with a nice gradient - which you can't do using single colors.

None of this works


			if msg.isListItemFocused() then
				row = msg.GetIndex()
				selection = msg.getData()
				app = CreateObject("roAppManager")
				if row=0 then
					if selection=0 then
						app.ClearThemeAttribute("GridScreenDescriptionImageSD")
						screen.SetDescriptionVisible(FALSE)
						app.SetThemeAttribute("GridScreenDescriptionImageSD","pkg:/images/1a_d.png")
						screen.SetDescriptionVisible(TRUE)
						Screen.Showmessage("HI")
						Screen.ClearMessage()
						Screen.Show()
					end if
					if selection=1 then
						app.ClearThemeAttribute("GridScreenDescriptionImageSD")
						screen.SetDescriptionVisible(FALSE)
						app.SetThemeAttribute("GridScreenDescriptionImageSD","pkg:/images/1b_d.png")
						screen.SetDescriptionVisible(TRUE)
						Screen.Showmessage("HI")
						Screen.ClearMessage()
						Screen.Show()
					end if
					if selection=2 then
						app.ClearThemeAttribute("GridScreenDescriptionImageSD")
						screen.SetDescriptionVisible(FALSE)
						app.SetThemeAttribute("GridScreenDescriptionImageSD","pkg:/images/1c_d.png")
						screen.SetDescriptionVisible(TRUE)
						Screen.Showmessage("HI")
						Screen.ClearMessage()
						Screen.Show()
					end if
				end if

				print"list item focused | current show = "; row ; "data= "; selection
			end if

How would you accomplish this task? And yes, for now I'm testing in SD.

RokuKevin · Answer

Although the screen.Show() should reapply all the theme attributes, this has been an area where we have been inconsistent....

I suggest rethinking changing the grid theme as users select different grid items. As a user, I would find this a little jarring...

--Kevin

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